发明名称 |
Method and apparatus for improving sequential writes to RAID-6 devices |
摘要 |
A method is provided for reducing the number of transactions for multi-segmented host system write operations in a RAID 6 device. The method comprises sending a write command for new multiple data segments to a plurality of data drives in the RAID 6 device via a RAID 6 controller. The RAID 6 device has data segments stored in stripes on the data drives and parity drives within the RAID 6 device. Parity is calculated for old data segments, new data segments and old parity on the parity drives to determine a new parity. The new parity is then written to one parity drive of the multiple parity drives within the RAID 6 device, thereby reducing the number of read and write transactions between the controller and the drives within the RAID 6 device. |
申请公布号 |
US6101615(A) |
申请公布日期 |
2000.08.08 |
申请号 |
US19980057382 |
申请日期 |
1998.04.08 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
LYONS, GARY ROBERT |
分类号 |
G06F11/10;(IPC1-7):G06F11/00 |
主分类号 |
G06F11/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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